ELECTRONIC SUBSTRATE HAVING AN EMBEDDED ETCH STOP TO CONTROL CAVITY DEPTH IN GLASS LAYERS THEREIN

    公开(公告)号:US20220352076A1

    公开(公告)日:2022-11-03

    申请号:US17243784

    申请日:2021-04-29

    Abstract: An electronic substrate may be fabricated having at least two glass layers separated by an etch stop layer, wherein a bridge is embedded within one of the glass layers. The depth of a cavity formed for embedding the bridge is control by the thickness of the glass layer rather than by controlling the etching process used to form the cavity, which allows for greater precision in the fabrication of the electronic substrate. In an embodiment of the present description, an integrated circuit package may be formed with the electronic substrate, wherein at least two integrated circuit devices may be attached to the electronic substrate, such that the bridge provides device-to-device interconnection between the at least two integrated circuit devices. In a further embodiment, the integrated circuit package may be electrically attached to an electronic board.

    METHOD, DEVICE AND SYSTEM FOR PROVIDING ETCHED METALLIZATION STRUCTURES

    公开(公告)号:US20210289638A1

    公开(公告)日:2021-09-16

    申请号:US17336008

    申请日:2021-06-01

    Abstract: Techniques and mechanisms for providing anisotropic etching of a metallization layer of a substrate. In an embodiment, the metallization layer includes grains of a conductor, wherein a first average grain size and a second average grain size correspond, respectively, to a first sub-layer and a second sub-layer of the metallization layer. The first sub-layer and the second sub-layer each span at least 5% of a thickness of the metallization layer. A difference between the first average grain size and the second average grain size is at least 10% of the first average grain size. In another embodiment, a first condition of metallization processing contributes to grains of the first sub-layer being relatively large, wherein an alternative condition of metallization processing contributes to grains of the second sub-layer being relatively small. A grain size gradient across a thickness of the metallization layer facilitates etching processes being anisotropic.

    INTEGRATED CIRCUIT PACKAGES INCLUDING GLASS-CORED SUBSTRATES WITH SELF-ALIGNED THROUGH GLASS VIAS

    公开(公告)号:US20250149421A1

    公开(公告)日:2025-05-08

    申请号:US18503489

    申请日:2023-11-07

    Inventor: Jeremy Ecton

    Abstract: Disclosed herein are microelectronic assemblies and related devices and methods. In some embodiments, a microelectronic assembly may include a glass layer having a surface; a material on the surface of the glass layer, the material including a positive-type photo-imageable dielectric (PID) material; a via including a conductive material, wherein the via extends through the glass layer and through the material on the surface of the glass layer, and wherein the via has a first diameter through the material on the surface, a second diameter at the surface of the glass layer, and the first diameter is equal to the second diameter plus 1 micron or minus 1 micron; and a dielectric layer on the material at the surface of the glass layer, the dielectric layer including a conductive pathway electrically coupled to the via.

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